Bibliographic Details
| Title: |
Optical read-out of the N\'eel vector in metallic antiferromagnet Mn$_{2}$Au |
| Authors: |
Grigorev, Vladimir, Filianina, Mariia, Bodnar, Stanislav Yu., Sobolev, Sergei, Bhattacharjee, Nilabha, Bommanaboyena, Satya, Lytvynenko, Yaryna, Skourski, Yurii, Fuchs, Dirk, Kläui, Mathias, Jourdan, Martin, Demsar, Jure |
| Source: |
Phys. Rev. Applied 16, 014037 (2021) |
| Publication Year: |
2021 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics |
| More Details: |
Metallic antiferromagnets with broken inversion symmetry on the two sublattices, strong spin-orbit coupling and high N\'{e}el temperatures offer new opportunities for applications in spintronics. Especially Mn$_{2}$Au, with high N\'{e}el temperature and conductivity, is particularly interesting for real-world applications. Here, manipulation of the orientation of the staggered magnetization,\textit{\ i.e.} the N\'{e}el vector, by current pulses has been recently demonstrated, with the read-out limited to studies of anisotropic magnetoresistance or X-ray magnetic linear dichroism. Here, we report on the in-plane reflectivity anisotropy of Mn$_{2}$Au (001) films, which were N\'{e}el vector aligned in pulsed magnetic fields. In the near-infrared, the anisotropy is $\approx$ 0.6\%, with higher reflectivity for the light polarized along the N\'{e}el vector. The observed magnetic linear dichroism is about four times larger than the anisotropic magnetoresistance. This suggests the dichroism in Mn$_{2}$Au is a result of the strong spin-orbit interactions giving rise to anisotropy of interband optical transitions, in-line with recent studies of electronic band-structure. The considerable magnetic linear dichroism in the near-infrared could be used for ultrafast optical read-out of the N\'{e}el vector in Mn$_{2}$Au. |
| Document Type: |
Working Paper |
| DOI: |
10.1103/PhysRevApplied.16.014037 |
| Access URL: |
http://arxiv.org/abs/2106.02729 |
| Accession Number: |
edsarx.2106.02729 |
| Database: |
arXiv |
